You can install tile over existing tiles, but the existing tiles must be in good condition and firmly attached to the surface. According to the reference material, any cracked, damaged, loose, or hollow-sounding tiles, and their adhesive, must be removed before installing new tiles.
Preparing Existing Tiles
Here’s how to prepare existing tiles for new tile installation:
- Inspection:
- Check each tile for cracks, damage, or looseness.
- Listen for hollow sounds by tapping on each tile; hollow sounds indicate poor adhesion.
- Removal:
- Remove all cracked, damaged, loose, or hollow-sounding tiles.
- Carefully remove any remaining adhesive from these areas. This creates a flat and stable surface.
- Clean the surface: Thoroughly clean the surface of the existing tiles to remove any dust, dirt, or grease.
- Surface Preparation: According to the TAL Tile To Tile YouTube video, using a suitable primer is crucial for promoting a good bond between the old and new tiles.
- Leveling: if necessary, fill any depressions and create a level surface to work from.
Installing New Tiles
Once the preparation is complete, you can install your new tiles.
- Apply Adhesive: Use a high-quality adhesive specifically designed for tile-on-tile applications. Follow the manufacturer's instructions on mixing and application.
- Tile Placement: Carefully position each new tile onto the adhesive, ensuring proper spacing with tile spacers.
- Grouting: After the adhesive has cured, apply grout to fill the gaps between tiles. Remove any excess grout and clean the tile surfaces.
| Step | Description |
|---|---|
| Inspect | Check for loose or damaged tiles. |
| Remove | Remove damaged tiles and adhesive. |
| Clean | Ensure the existing tiles are clean and ready for new adhesive. |
| Apply Primer | Apply primer for optimal adhesion. |
| Leveling | Level any depressions on the old tile surface. |
| Apply Adhesive | Use suitable tile adhesive. |
| Place New Tiles | Ensure proper spacing. |
| Grout | Fill spaces between tiles. |
Key Considerations
- Increased Floor Height: Adding new tiles on top of existing ones will increase the overall floor height, which may affect door clearances.
- Weight: The added weight of new tiles could put stress on the subfloor. Ensure the subfloor is strong enough to handle the extra weight.
- Adhesion: Using the correct primer and adhesive is key to successful tile-on-tile installation.
